1.

The low-cost Mars mission craft of India,

A. which ISRO successfully placed in the Martian orbit a year back in September 2014.
B. which ISRO had successfully placed in the Martian orbit a year back in September 2014.
C. which ISRO could successfully placed in the Martian orbit a year back in September 2014.
D. which ISRO successfully placed in the Martian orbit a year back on September 2014.
Answer» C. which ISRO could successfully placed in the Martian orbit a year back in September 2014.


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